<!DOCTYPE html>
<html lang="en">
<head>
  <meta charset="UTF-8">
  <meta name="viewport" content="width=device-width, initial-scale=1.0">
  <title>Document</title>
</head>
<body>
  
</body>
<script src="./My-Promise.js"></script>
<script>
  let promise = new MyPromise((resolve, reject) => {
    setTimeout(()=> {
      resolve('手写promise')
    }, 1000)
  }).then((r) => {
    console.log(r)
  })
</script>
</html>